IMMIGRATION TO THE U.S.

 
 
 
         Border Patrol agent Bradford Rubinoff looks for illegal aliens
         amid the trash they left behind at a layover spot about 35 miles
         north of the border.
     A truck drives along the border between Naco, Ariz., and
     Naco, Mexico, a popular crossing point.

 
 
 
     Illegals easily get past a barbed-wire fence,
     which is all that marks the border near
     Sasabe, Ariz. 

 
 
Veronica Mercado, from Guadalajara, Mexico, has her
     finger scanned as she enters U.S. in Laredo, Tex.
     Code enforcement officers in Farmingdale, N.Y., patrol for
     drivers who stop illegally to pick up day laborers.